Perkins 1106C Genset Systems Operation Testing And Adjusting page 37

KENR6931
Inlet Manifold Pressure (Engines that are
turbocharged) – The difference between the
turbocharger outlet pressure and atmospheric
pressure is commonly referred to as inlet manifold
pressure. The sensor for the inlet manifold air
pressure measures the amount of boost.
Breakout Harness – The breakout harness is a
test harness that is designed to connect into the
engine harness. This connection allows a normal
circuit operation and the connection simultaneously
provides a Breakout T in order to measure the
signals.
Bypass Circuit – A bypass circuit is a circuit that is
used as a substitute circuit for an existing circuit. A
bypass circuit is typically used as a test circuit.
CAN Data Link – The CAN Data Link is a serial
communications port that is used for communication
with other microprocessor based devices.
Code – Refer to "Diagnostic Code" or "Event Code".
Cold Mode – Cold mode is a mode for cold starting
and for cold engine operation. This mode is used for
engine protection, reduced smoke emissions and
faster warm up time.
Communication Adapter Tool – The
communication adapter provides a communication
link between the ECM and the Electronic Service
Tool.
Component Identifier (CID) – The CID is a number
that identifies the specific component of the electronic
control system that has experienced a diagnostic
code.
Coolant Temperature Sensor – The coolant
temperature sensor detects the engine coolant
temperature for all normal operating conditions and
for engine monitoring.
Customer Specified Parameters – A customer
specified parameter is a parameter that can be
changed in the ECM with the Electronic Service Tool.
A customer specified parameter's value is set by
the customer. These parameters are protected by
customer passwords.
Data Link – The Data Link is a serial communication
port that is used for communication with other
microprocessor based devices.
Derate – Certain engine conditions will generate
event codes. Also, engine derates may be applied.
The map for the engine derate is programmed into
the ECM software. The derate can be one or more of
3 types: reduction of rated power, reduction of rated
engine speed, and reduction of rated machine speed
for OEM products.
Desired Engine Speed – The desired engine speed
is input to the electronic governor within the ECM.
The electronic governor uses the signal from the
throttle position sensor, the engine speed/timing
sensor, and other sensors in order to determine the
desired engine speed.
Diagnostic Code – A diagnostic code is sometimes
referred to as a fault code. These codes indicate an
electronic system malfunction.
Diagnostic Lamp – A diagnostic lamp is sometimes
called the check engine light. The diagnostic lamp
is used to warn the operator of the presence of an
active diagnostic code. The diagnostic lamps are
red and orange. The lamp may not be included in
all applications.
Digital Sensor Return – The common line (ground)
from the ECM is used as ground for the digital
sensors.
Digital Sensors – Digital sensors produce a pulse
width modulated signal. Digital sensors are supplied
with power from the ECM.
Digital Sensor Supply – The power supply for the
digital sensors is provided by the ECM.
Direct Current (DC) – Direct current is the type of
current that flows consistently in only one direction.
DT, DT Connector, or Deutsch DT – This is a type
of connector that is used on Perkins engines. The
connectors are manufactured by Deutsch.
Duty Cycle – See Pulse Width Modulation.
Electronic Service Tool – The electronic service
tool is used for diagnosing a variety of electronic
controls and the electronic service tool is also used
for programming a variety of electronic controls.
Engine Control Module (ECM) – The ECM is the
control computer of the engine. The ECM provides
power to the electronics. The ECM monitors data that
is input from the sensors of the engine. The ECM
acts as a governor in order to control the speed and
the power of the engine.
Engine Monitoring – Engine Monitoring is the part
of the electronic engine control that monitors the
sensors. This also warns the operator of detected
problems.
Engine Oil Pressure Sensor – The engine oil
pressure sensor measures engine oil pressure. The
sensor sends an electronic signal to the ECM that is
dependent on the engine oil pressure.
Systems Operation Section
37